STRONGER & DURABLE: BEBOBLY camper wheel chock is a stabilizer that is installed between the two tires of a Trailers or RVs. Quality tools to help you get a better travel experience. Prevent your items from moving due to vibration, traffic, wind, etc. Keep your travel trailer stable, comfortable and safe. STURDY X-SHAPED DESIGN: X-shaped wheel chocks made of cast iron and reinforce all connections, withstand greater torque. Each unit is built to be stable, safe and durable. And the surface is coated with zinc plated material, it won't rust easily, great for outdoor use. EXTRA GRIP: Provide the stabilization and prevent the tires from moving by applying opposite force to the tandem tires. And raised ribs design on both sides can increase the friction to achieve a better grip on the tires. UNIVERSAL FIT: RV wheel stabilizer can retract down to 3.5" and extend up to 12". Applications for : Camping Trailer, RV, Heavy Duty Trucks, Fifth Wheel Trailer, Tandem Wheel Trailers, Toy Hauler, Motor Homes, etc. CARRYING & STORAGE: Package contain 2 wheel chock stabilizers, 1 ratchet wrench, 1 socket adapter and 1 storage bag. You can easy and quick installation of wheel chock stabilizer, it also can be conveniently carried along during your travels, ensuring stability wherever you park your RV. STRONGER & DURABLE: BEBOBLY camper wheel chock is a stabilizer that is installed between the two tires of a Trailers or RVs. Quality tools to help you get a better travel experience. Prevent your items from moving due to vibration, traffic, wind, etc. Keep your travel trailer stable, comfortable and safe. STURDY X-SHAPED DESIGN: X-shaped wheel chocks made of cast iron and reinforce all connections, withstand greater torque. Each unit is built to be stable, safe and durable. And the surface is coated with zinc plated material, it won't rust easily, great for outdoor use. EXTRA GRIP: Provide the stabilization and prevent the tires from moving by applying opposite force to the tandem tires. And raised ribs design on both sides can increase the friction to achieve a better grip on the tires. UNIVERSAL FIT: RV wheel stabilizer can retract down to 3.5" and extend up to 12". Applications for : Camping Trailer, RV, Heavy Duty Trucks, Fifth Wheel Trailer, Tandem Wheel Trailers, Toy Hauler, Motor Homes, etc. CARRYING & STORAGE: Package contain 2 wheel chock stabilizers, 1 ratchet wrench, 1 socket adapter and 1 storage bag. You can easy and quick installation of wheel chock stabilizer, it also can be conveniently carried along during your travels, ensuring stability wherever you park your RV.